System or arrangement for tapping or bleeding steam



Dec. 20, 1927. 1,653,560

H. GLEICHMANN SYSTEM OR ARRANGEMENT FOR TAPPING1 OR BLEEDING STEAM 5 INVENTO'R WITNESS fin :zni:

M ATTOR E Y) Patented Dec, 20, 1927.

UNITED STATES 1,053,560 PATENT OFFICE.

Hans GLsronmANN, or nnnnm-srnmnnssranr, GERMANY,- Assrorion. 'ro SIEMENS- scnucxnn'rwnaxn ensnnnscnar'r mrr nnscnnanxrnn. HAFTUNG, or SIEMENS- STADT, GERMANY, A GERMAN conroaa'rron.

SYSTEM OR ARRANGEMENT FOR TAPPING OR BLEEDING STEAM.

Application filed April 6, 1926, Serial in.

bleeding of the steam by adding to the plant 18 a back pressure engine with one or more engine ahea of the main engme may be eifected in a particularly suitable manner,

, 20 if the existing steam power plant is extended by the addition of a boiler of higher pressure.

According to my invention a tap of the 7 series engine the pressure of which tap corresponds with the pressure of the admission steam of the main engine is then led into the live steam pi e of the main engine'and the other taps o the series engine are led to a boiler feed water heater. This additional machine, for instance a turbine, then constitutes a constant normal load on its boiler,

corresponding with the most favorable steam supply by the boiler of higher pressure and utilizes the surplus steam, available at its several pressure'stages in case of low load,

for heating the feed water.

An embodiment fof my invention is diagrammatically illustrated in the drawing, by way of example.-

Referring to the drawing, 1 indicates a boiler which su plies the turbine 3 with steam through t e. main 2. The steam admission to this main turbine 3 is controlled, according to the load which it carries, by means of the overnor actuated admission valve 16. 18 is the condenser for the exhaust steam. Ahead of the turbine 3 is connected a turbine 4 designed for and operating at a higher admission pressure. mission of the steam into this series turbine 4 is regulated for constant boiler pressure by the valve 5, connected in well-known manner to a pressure responsive device 17 which in turn is connected to the live steam Such plants can sub- The ad-v 100, 09e, and in Germany August 1'6, l924.

veys the feed water through the economizer 9 into the'steam heater 6.

Instead of a steam turbine 4, multiple compound reclprocatmg engines, which are ta suitable for tapping ma naturall be emihe subse uent connection of a bleeder p y y loved.

The arrangement lant for a higher steam pressure. It enales steam plants, which were originally not designed for steam tap ing, to utilize the tapped steam for the eatmg of the boiler feed. water.

While I have shown my invention in a preferred form, it is obvious that changes may be made in the embodiment thereof without departing from the principles and spirit of my invention. I desire, therefore, t at the appended claims shall be accorded the broadest construction, when read in the light of the prior art.

I claim as my invention 1. In a' steam power plant a main'engine and a normal steam supply therefor, a multistage back pressure auxiliary engine, operating at a pressure hig ing pressure of the mam engine and having taps at its several stages for bleeding steam therefrom, and a high'pr essure boiler for supplying steam to said auxiliary engine, a pipe leading from that tap of said engine, whose steam pressure corresponds substantially to the admission pressure of said main engine, into the supply main of said main engine, a steam feed-water heater for-heatin the feed water required for said plant and steam connections between said heater and the remaining taps of said engine.

2. In a steam power'plant a main engine and a normal steam supply therefor, a multistage back pressure auxiliary engine, operating at a pressure higher than the operating pressure of the main engine and having taps v according to my invent1on facllltates the reconstruction of a steam at its several" sta es for bleeding steam therefrom, and a high pressure boiler for supplying steam to said auxiliar engine, a pipe leading from that tap of sad engine, Whose steam pressure corresponds substantially to the admission pressure of said main engine, into the supply main of said main engine, a steam feed-water heater for heating the feed water required for said plant and steam connections between said heater and the remaining taps of said engine and means for regulating the steam admission. to said main engine in dependence from its load, and means for regulating the steam admission 'to said auxiliary engine only in accordance with the pressure in the live steam supply line to said auxiliary enginew Y 3, In a steam power plant a main. engine .ing steam to said auxiliary engine, a pipe leading from an interstage of said engine of adequate pressure to thenormal steam supply connections of said main engine for supplementing the normal steam supply of the latter, and a steam feed-water heater for heating the feed water required for said plant connected to the taps of the remaining stages ofsaid auxiliary engine to use the available surplus steam from said tapsfor feed-water heating.

In testimony whereof I affix my signature.

HANS GLEICHMANN. 

